AP Computer Science A Unit 3 Progress Check: MCQ with Complete Solutions
239 views 0 purchase
Course
AP Computer Science A
Institution
AP Computer Science A
AP Computer Science A Unit 3 Progress
Check: MCQ with Complete Solutions
What is a `Boolean expression`?
A Boolean expression is an expression that evaluates to either `true` or `false`.
Explain the purpose of an `if statement` in programming.
An if statement allows a program to exec...
AP Computer Science A Unit 3 Progress
Check: MCQ with Complete Solutions
What is a `Boolean expression`?
✔✔ A Boolean expression is an expression that evaluates to either `true` or `false`.
Explain the purpose of an `if statement` in programming.
✔✔ An if statement allows a program to execute a block of code only if a specified condition is
true.
What does the `==` operator check for in Java?
✔✔ The `==` operator checks if two values are equal.
How does an `else` statement work with an `if` statement?
✔✔ An else statement runs a block of code if the condition in the if statement is false.
1
,What is a `nested if statement`?
✔✔ A nested if statement is an if statement placed inside another if statement, allowing for more
complex decision-making.
What is the difference between `&&` and `||` operators?
✔✔ The `&&` operator (AND) checks if both conditions are true, while the `||` operator (OR)
checks if at least one condition is true.
Explain the role of `Boolean operators` in compound conditions.
✔✔ Boolean operators (`&&`, `||`, `!`) combine multiple conditions into a single Boolean
expression, enabling more complex decision-making in if statements.
What is the purpose of the `!` (NOT) operator?
✔✔ The `!` operator inverts the Boolean value, turning `true` into `false` and `false` into `true`.
2
, How does short-circuit evaluation work with `&&` and `||` operators?
✔✔ In short-circuit evaluation, the program stops evaluating the rest of a compound Boolean
expression as soon as the outcome is determined. For `&&`, if the first condition is false, it
doesn't check the rest. For `||`, if the first condition is true, it skips the rest.
What is the role of `relational operators` (like `<`, `>`, `<=`, `>=`) in if statements?
✔✔ Relational operators compare two values and return a Boolean result (`true` or `false`),
which is used to make decisions in if statements.
Consider the following variable declarations and initializations.
int a = 2;
int b = 6;
int c = 3;
Which of the following expressions evaluates to false ? ✔✔D. a < b != c < b
Consider the following code segment.
3
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BrilliantScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
